Luke, you're going to find that many of the truths we cling to depend greatly on our own point of view.

Obi Wan Kenobi (Alec Guinness)

6 seconds sound clip from the Star Wars: Episode VI - Return of the Jedi movie soundboard.

You can hear this line at 00:46:30.897 in the Blu-ray version of the movie.

Quote context

[...]

- Yoda will always be with you.

- Why didn't you tell me?

- You told me Vader betrayed and murdered my father.

- Your father was seduced by the dark side of the Force. He ceased to be Anakin Skywalker and became Darth Vader. When that happened, the good man who was your father was destroyed.

- So what I told you was true, from a certain point of view.

- A certain point of view?

- Luke, you're going to find that many of the truths we cling to depend greatly on our own point of view.

- Anakin was a good friend.

- When I first knew him, your father was already a great pilot, but I was amazed how strongly the Force was with him.

- I took it upon myself to train him as a Jedi. I thought that I could instruct him just as well as Yoda. I was wrong.

- There is still good in him.

[...]